if you replace your cat with a test pipe does your check engine light always come on? my engine light is on and the code is a bank 2 sensor. mitsubishi says its the test pipe and not the oxygen sensor but im not sure. just wonderin.

 

yup...they r correct

 

ok thanks man. just checkn. if you have a walbro 255 does that throw off how the engine idles or do i need to replace my idle control sensor?

 

yes it will come on but there are ways that you can get the check engine light off here:https://www.evolutionm.net/forums/sh...d.php?t=215795, tells you all you need to know to ride with a test pipe with the use of a fouler.

 

Awesome. This doesn't mess with a o2 wideband does it?

 

Dude, you need to do a little searching.

The second O2 only sees if your cat is working properly. The primary(near the turbo) takes care of the A/F.

 

this will take care of the CEL worked for me!!!!

http://cgi.ebay.com/ebaymotors/Test-...1%7C240%3A1318

 

haha. o yea. sorry.

 

Yes, your engine light will come on, you can use a CEL elliminator, or have who every did the re-flash on your ECU take it out from there. Be careful with a test pipe, more HP yes, but where I live cops pull people over and check for Cats, is why I run a High Flow Cat. Sure its just a fix it ticket, but I am tired of the cops buggin me over petty crap. I also noticed my TQ numbers are higher with the Cat then without, so the little backpressure it does create helps...I would rather have more TQ, then HP in my use anyway.

 

What kind of hi-flow cat did you get? I told the shop to find one and they said they couldn't find one so i just went another route.

 

No, walbro 255 does not throw off the idle.. I does have a lil whine when you really listen to it.. maybe you have different cams, and thats why your idle might be rough..
but there are plenty of routes you can go with test pipe... if you do get the fouler, make sure your state doesnt look under the car while they perform the emissions, and if they do, just get someone to weld the cat cover, so it looks like you actually have a cat there..

 

Okay.. another question.. I though that there was only one oxygen sensor back here located on the test pipe. Here what i found after i bought the nonfoulers..(sorry if they are a little blurry- its with my phone)


There is two of them. They go here..


And appear to be connected right under my passenger seat. I thought this had to do with the o2 wideband sensor but isnt it supposed to be connected up front?


Do i have to do this to both of them?
BTW, I guess you have to click on em to actually see them.

 

the test pipe is well worth it though

 

yea i want 2 keep it but i do both of them?

 

You have an Innovate LC-1 wideband O2. You should have a wideband O2 gauge with it or maybe the previous owner just use it to log A/F for tuning.